Can I leave my laptop sleep a long time

[nhieu9200]

Hi, Im using 4430s run Yosemite with PBI lastest. Over a month ago, if i leave the laptop sleep about 2-3 hours, laptop got black sceen, other function still working, i still hear sound while increase volume.
Now, i reinstall Yosite and want to know how to fix that problem. Maybe disable hibernate or something else ... Thanks u.

 

[RehabMan]

Hi, Im using 4430s run Yosemite with PBI lastest. Over a month ago, if i leave the laptop sleep about 2-3 hours, laptop got black sceen, other function still working, i still hear sound while increase volume.
Now, i reinstall Yosite and want to know how to fix that problem. Maybe disable hibernate or something else ... Thanks u.

The Probook Installer disables hibernation.